Tom Overbey
Tom Overbey is a senior security risk advisor and team lead for K2 Integrity/Leviathan Security Group. He works with clients to understand their security risk maturity and response agility, identify how to close their vulnerability gaps, and reduce their overall risk. Tom’s expertise has been developed around the strategy and deployment of tabletop exercises by […]
Juliette D. Moss
Juliette D. Moss is a senior member of K2 Integrity/Leviathan Security Group’s technical services team, where she specializes in complex application security penetration testing, secure code review, threat modeling, and attack surface analysis. She brings more than two decades of hands-on experience in system IT maintenance, programming, and virtual machine configuration, combining deep technical knowledge […]
Robee Krishan
Robee Krishan is a senior security risk advisor for K2 Integrity/Leviathan Security Group. With expertise in cybersecurity, privacy compliance, and risk management, Robee helps organizations safeguard their data and navigate complex security frameworks. She specializes in conducting risk assessments and developing policies and procedures, as well as guiding clients through standards such as ISO 27001, […]
Frank Heidt
A recognized expert in the fields of information assurance, network security, and systems penetration, Frank Heidt brings together security professionals with diverse backgrounds from premier consultancies, industries, and government agencies to design and deliver cybersecurity services and programs that impact the world’s most influential companies. Prior to forming K2 Integrity/Leviathan Security Group, Frank was a […]
Paul Griffith
Paul Griffith is a senior security consultant with K2 Integrity/Leviathan Security Group, where he provides expert guidance in security architecture; leads complex black-, grey-, and white-box application penetration tests; and supports comprehensive security auditing efforts. Before joining K2 Integrity/Leviathan Security Group, Paul served as an NSA-certified computer network operations (CNO) operator conducting Cyber Warfare Operations […]
Brandon Gnash
Brandon Gnash is a senior security consultant with expertise in offensive security, application security, and advanced vulnerability research. He has extensive experience identifying, analyzing, and exploiting complex security flaws across diverse technologies. Brian recently rejoined K2 Integrity/Leviathan Security Group after a few years in other roles outside the firm. Before returning to Leviathan, Brandon served […]
Brian Campbell
Brian Campbell leads technology strategy for K2 Integrity/Leviathan Group, overseeing the development and adoption of emerging technologies and driving technical excellence across service delivery. He also heads K2 Integrity/Leviathan Security Group’s Technical Services group, guiding its vision, operational performance, and continued growth. With more than 25 years in the technology industry—including over two decades in […]
Lauren Talbot
Lauren Talbot is a managing director at K2 Integrity, where she applies data as a strategic asset to solve complex challenges. Bringing a proven ability to adapt, innovate, and deliver expert value across diverse industries, Lauren is highly skilled at cutting through noise to define and achieve ambitious targets—whether pre-established or emerging—and excels at aligning […]
Matt McNichol
Matt McNichol is an associate managing director in K2 Integrity’s Financial Crimes Risk Management practice. He works with financial institutions and jurisdictional authorities to identify, assess, and mitigate risks related to money laundering, terrorist financing, bribery and corruption, sanctions evasion, and other illicit financial activities. Matt advises clients on designing and implementing comprehensive financial crimes […]
Steven Pacitto
Steven Pacitto is an associate managing director in K2 Integrity’s Financial Crimes Risk Management practice, where he leverages more than a decade of experience in internal fraud risk management and anti-money laundering (AML), Bank Secrecy Act (BSA), and sanctions compliance. Steven partners with global financial institutions and jurisdictional authorities to identify, assess, and mitigate risks […]